Mn^(2+)掺杂对SrF_2∶Yb,Er纳米晶结构及发光性能的影响  

Influence of Mn^(2+) on the structure and luminescence of SrF_2∶Yb,Er nanocrystal

作　　者：钟诚[1] 罗然 袁红艳 张婷[1] 郭善军[1] 蒋芸[1] 高道江[2] Zhong Cheng1, Luo Ran2, Yuan Hongyan1, Zhang Ting1, Guo Shanjun1, Jiang Yun1, Gao Daojiang2(1.Basic Department,Dazhou Vocational and Technical College,Dazhou 635001; 2.College of Chemistry and Materials Science,Sichuan Normal University,Chengdu 61006)

机构地区：[1]达州职业技术学院基础部,达州635001 [2]四川师范大学化学与材料科学学院,成都610066

出　　处：《化工新型材料》2018年第10期87-91,共5页New Chemical Materials

基　　金：四川省科技厅项目(2015JY0274);四川省教育厅重点项目(15ZA0363)

摘　　要：通过温和水热法制备了氟化锶(SrF_2)∶Yb,Er,Mn纳米晶。采用X射线衍射、扫描电子显微镜、荧光分析对制备的纳米晶微结构、形貌、发光性能进行表征。结果表明,纳米晶微结构为面心立方晶相,形貌为类球形,随着Mn^(2+)离子的掺入,样品发生晶格畸变,粒径减小,发光强度减弱,Er^(3+)离子的红/绿发光强度比增大,发光颜色从绿光区向红光区移动。分析了Mn^(2+)的掺入对样品微结构、形貌、发光性能的影响。通过样品发光强度与激发功率的关系,分析了SrF_2∶Yb,Er,Mn纳米晶的上转换发光机制。SrF2∶Yb,Er,Mn nanocrystals were prepared by a mild hydrothermal method.The microstructure,morphology and luminescence properties of as-prepared sample were characterized by XRD,SEM and FA.The results showed that the microstructure of sample was face-centered cubic crystal phase,and had morphology of spherical-like.With the addition of Mn^2＋ ions,the lattice of sample was distorted,the particle size decreased,the luminescence intensity weakened and the red/green luminescence ratio increased.The luminescence shifted from the green region to the red region.The effects of Mn^2＋ on the microstructure,morphology and luminescence properties of the samples were analyzed.The upconversion luminescence mechanism of sample was analyzed by the relationship between the luminescence intensity and the excitation power.

关 键 词：氟化锶 MN^2+ 红光增强 微结构变化 上转换机制 

分 类 号：TB383.1[一般工业技术—材料科学与工程]